一清二楚 (yī qīng èr chǔ) — to be perfectly clear about something; to understand every detail

Definition

A chengyu meaning 'perfectly clear, every detail understood.' Used as a predicate after a topic (对这件事一清二楚) to stress complete, unambiguous understanding.

idiom
to be perfectly clear about somethingto understand every detail

Examples

  • 一清二楚
    Tā duì zhè jiàn shì de lái lóng qù mài yī qīng èr chǔ.
    He is perfectly clear about the whole context of this matter.
  • 一清二楚
    Suī rán tā méi shuō, dàn zhēn xiàng dà jiā dōu yī qīng èr chǔ.
    Although she didn't say it, everyone is crystal clear about the truth.
  • 一清二楚
    Zhè ge wèn tí wǒ diào chá le sān gè xīng qī, xiàn zài yī qīng èr chǔ.
    I've investigated this problem for three weeks, and now I understand every detail.

Origin

Compound word
构词法gòucífǎ
联合liánhéCoordinate

Two parts of equal weight, alike or opposite in meaning, standing side by side.

一清utterly clear
emphaticqīngclear
偏正Modifier + head
二楚utterly clear
èremphaticchǔclear
偏正Modifier + head

The 清 and 楚 both mean clear; the 一 and 二 here do not count, they just intensify the pair, giving perfectly clear.

Characters in this word

An abstract idea shown by a mark or a diagram rather than by a picture of an object.

一 is drawn as one horizontal stroke, marking the number one.

Open 一 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
Written in full asshuǐwater
Sound part声符shēngfú
qīngqīng
Same sound today

清 has 氵 (water) on the left and 青 on the right to show its sound.

Open 清 →

An abstract idea shown by a mark or a diagram rather than by a picture of an object.

二 is drawn as two parallel strokes, where the number of strokes shows the amount.

Open 二 →

Most characters — around four in five — are built this way: one part hints at the meaning, the other at the pronunciation.

Meaning part形符xíngfú
línforest; grove; woods
Sound part声符shēngfú
chǔ
Close in sound todayThe sound part was a clue two thousand years ago — it often still helps, but not always.

The old form combined 林 (forest) with a part like a footprint, perhaps pointing to a place with a group of trees. In 楚, the lower part is written as 疋, which gives the sound and preserves part of that drawing.

Open 楚 →

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